James Ribbons Antiques has dated this piece to the 1860s.
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We have never seen a refectory table with this decorative ebony inlay but it is obviously original to the table.
The table measures 8 foot 9 inches long when fully extended and is 2 foot 9 inches wide and 29 inches high. The table closes to a measurement of 4 foot 9 inches. So it could easily accommodate 10 diners.

Having had the table completely overhauled the condition is excellent and will only be improved by further polishing.
On close examination the now treated worm holes may be seen on the bottom of the feet and nowhere else.
James Ribbons Antiques has dated this piece to the 1860s.
You can view the stock and full dealer information on the James Ribbons Antiques Profile Page